Patent US3401139A successfully refreshed from Google Patents.
US3401139A
Expired / Lapsed
US
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Flexible phenolic baking resins prepared by reacting a polyhydric phenol ether, phenol and an organic solution of formaldehyde
Assignee: Union Carbide Corp
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Filing: 1967-08-17
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Granted: 1968-09-10
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Expires: 1987-08-17
Abstract
No abstract record available.
Inventors
- 👤 William I Wertz
- 👤 Stanley H Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:08
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/24; C08G8/10; C08G8/28; C08G8/38
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
18 words
A CURABLE PHENOLIC COMPOSITION CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (A) A POLYHYDRIC COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
18 words
A CURABLE PHENOLIC COMPOSITION CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (A) A POLYHYDRIC COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
40 words
THE COMPOSITION ACCORDING TO CLAIM 1 WHEREIN THE AMOUNT OF PHENOL RANGES FROM ABOUT 20 TO ABOUT 30 PERCENT BY WEIGHT OF THE POLYHYDRIC COMPOUND AND THE SOLVENT IS AN ALKYL ALCOHOL HAVING FROM 1 TO 6 CARBON ATOMS INCLUSIVE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |